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    <meta charset="UTF-8">
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    <title>Document</title>
</head>

<body>
    <script>
        function Father(name, age) {
            this.uname = name;
            this.uage = age;
        };
        var father = new Father(1, 2);
        console.log(father);

        function Son(name, age, address) {
            Father.call(this, name, age);
        };
        var son = new Son('连浩伟', 20);
        console.log(son);
    </script>
</body>

</html>